Dental apparatus.



F. E. BUCK.

DENTAL APPARATUS.

APPLICATION FILED MAY 17, 1912.

1 0 3 6 44 1 a Patented Aug. 1912.

i 6 Y & 74 5 1.9?7

WITNESSES ATTORNEYS COLUIABIA Wm" 00., WASHINGTON. D. c

FRED EUGENE BUCK, OF JACKSONVILLE, FLORIDA.

DENTAL APPARATUS.

To all whom it may concern Be it known that I, FRED E. BUCK, a citizenof the United States, and a resident of Jacksonville, in the county ofDuval and State of Florida, have made certain new and usefulImprovementsin Dental Apparatus, of which the following is aspecification.

My invention is an improvement in dental apparatus, and has for itsobject the provision of a simple, inexpensive, and easily operateddevice of the character specified, wherein a holder is provided having aperforate bottom, and mounted to permit a maximum adjustment, bothlaterally, angularly and vertically, and wherein any adjustment may bemade with one hand, and with a single handle.

In the drawing: Figure 1 is a perspective view of the improvement inuse, Fig. 2 is a longitudinal vertical section, and Fig. 3 is a sectionof the holder at right angles to Fig. 2.

The present embodiment of the invention comprises a ring 1 of suitabledepth and diameter and provided at its lower edge with an internalannular flange 2. A grating or screen is held on the flange 2 and formsa bottom for the ring. The grating or screen comprises a ring or annularframe 3, and a screen 4 extending across the ring, the screen beingformed of crossed wires, and being concave on its upper face, thusadding to the depth of the holder, consisting of the ring 1 and thescreen. The ring or frame 3 is seated on the flange 2, and the said ringis of such size that it fits closely within the ring 1 and is thus heldin place. The ring or frame may however be secured in place if desired.

The holder is supported by a semicircular spring steel frame 5, the freeends of the said frame each having a transverse opening for receiving ascrew to hold the holder in place. The opening at one end of the frameis traversed by a screw 6, which engages an opening in the ring 1, andthe opening at the other end is traversed by a screw 7. The screw 7 isformed by reducing the end of a stem 8, and an annular shoulder 9 isformed between the stem and the reduced end. The screw engages theopening at the end of the frame 5 and a registering Specification ofLetters Patent.

Application filed May 17, 1912.

Patented Aug. 20, 1912.

Serial No. 698,064.

opening in the ring 1, and the shoulder 9 bears against the outer faceof the spring frame. The outer end of the stem is enlarged to form ahead 10, and the said head is perforated to receive one end of a rod 11.A set screw 12 is threaded through the head into the perforation andengages the rod to secure it in adjusted position. The respective endsof the rod 11 are off-set laterally from each other, Fig. 3, and a grip13 is secured to the outer end. It will be evident that the holder maybe moved in the spring frame by means of the rod, and the handle formedby the grip and rod may be lengthened or shortened if desired.

A rod 1a is secured to the center of the spring frame 5, one end of therod being reduced, as shown at 15 to pass through an opening in theframe, and the reduced end is headed on the opposite side of the frame,as shown at 16. The other end of the rod is also reduced, as shown at 17and the extremity of the reduced portion is threaded. The rod 14: isheld in a sleeve 18, one end of the sleeve abutting against the springframe 5, and the other end is threaded into one end of a T 19. Thereduced portion 17 of the rod is beyond the adjacent end of the sleeve18, and the threaded end of the reduced portion is engaged by a nut 20,which fits in the other end of the T. A spring 21 is arranged betweenthe nut 20, and .the shoulder formed between the reduced portion, andthe body of the rod.

A support or standard is provided for the T, the said support consistingof a base or outer section 22, having a vertical opening 23, in which issecured the tubular inner section 24 of the support. The upper end ofthe inner section is threaded into the lateral branch of the T, anda setscrew 25 is provided for holding the sections of the support or standardin adjusted position.

The nut 20 is provided with a roughened or milled surface forconvenience in turning the same, as is also the set screw 25. It will beevident that by loosening the set screw 25, the holder may be adjustedvertically, and by manipulating the handle the holder may be swung inthe spring frame. The frame may also be oscillated by the handle, therod 14 turning in the sleeve 18.

The spring 21 holds the frame in adjusted position, and the tension ofthe spring may be adjusted by means of the nut 20. The spring pressesthe sleeve 18 against the frame, and causes sufficient friction to holdthe frame in the position in which it is placed.

The improved apparatus is designed for use in soldering cases of bridgework, especially large cases, where several different positions arenecessary.

I claim 1. A device of the character specified, comprising a holderconsisting of a ring and having at its lower end an internal annularflange, a grating comprising an annular frame fitting within the ringand resting on the flange and a perforate screen arranged across theframe and secured thereto, said screen consisting of crossed wires andbeing concave on its inner face, a semicircular spring frame embracingthe ring, a screw passing through each end of the spring frame andengaging the ring, said: screws engaging the ring at opposite points, arod secured to the spring frame at its center, a support comprising an.outer section or base having a vertical opening, and an! inner sec tionor sleeve slidable in the opening, a set screw for holding the sectionsin adjusted position, a T at the upper end of the inner section, thelateral. branch of the T engaging the said upper'end, said rod extendingthrough the T, a sleeve on: the red, one end of the sleeve engaging theframe and the other being secured in the end of the T, a nut threadedonto the outer end of the rod, said nut fitting within theend of the T,one of the screws connecting the frame to the ring, being extendedlongitudinally and having a head provided with a transverse opening, arod passing through the opening at one end and having a grip at theother, and means for securing the rod to theheadi 2. A device of thecharacter specified, comprising a holder consisting of a ring and havingat its lower end an internal annular flange, a grating comprising anannular frame fitting within the ring and resting on the flange and aperforate screen arranged across the frame and secured thereto, saidscreen consisting of crossed wires and being concave on its inner face,a semicircular spring frame embracing the ring, a screw passing througheach end of the spring frame and engaging the ring, said screwsengagingv the ring at opposite points, a rod secured to the spring frameat its center, an adjustable support, a rotatable connection between thesupport and the rod, yielding means for holding the frame in adjustedposition, and a rod secured toone of the connecting screws between theframe and the ring, said rod havingja grip at its. outer end].

lar frame fitting within the ring and resting on the flange and aperforate screen arranged across the frame and secured thereto, asemicircular spring frame embracing ,the. ring, a pivotal connectionbetween the ends of the frame and the ring, said connections being atopposite points of the 'ring, a rod secured to the ring at one of thesaid connections for swinging the ring, an adjustable support, a rodconnecting the frame to the support and rotatable in" the support, andyielding means for holding the frame in adjusted position.

4. A device of the character specified, comprising a ring, a screen orgrating arranged transversely of the ring at one end, a substantiallysemicurcular spring frame, a pivotal connection between each end of theframe and the ring, said connections being at diametricallyoppositepoints on the ring, a radially extending stem at one of the saidconnections and rigid with the ring, said stem having a transverseperforation at its outer end, a rod having one end iirthe opening andprovided with a grip at the other end, a rod secured to the center ofthe frame, a sleeve on the rod adjacent to the frame, a nut threadedonto the outer end of the rod, spring between the nut and the sleeve,and an adjustable support connected to the sleeve.

5. A device of the character specified, comprising a ring, a screen orgrating arranged transversely of the ring at one end, a substantiallysemicircular spring frame, a pivotal connection between each end of theframe and the ring, said connections being at diametrically oppositepoints on the ring, a handle rigidly connected tethering at one of itspivotal connections, a rod secured to the center of the frame,v a sleeveon the rod adjacent to the frame, a nut threaded onto the outer end ofthe rod, a spring between the nut and the sleeve, and an adjustablesupport connected to the sleeve. p

6. A device of the character specified, comprising a ring, a screen: orgrating arranged transversely of the ring at one end, substantiallysemicircular spring frame, a pivotal connection. between each end of thespring frame and the ring, said connections being at diametricallyopposite-points on the ring to hold the ring in any desired position, ahandle rigid with the ring, a rod secured to the center of the frame, asleeve on the rod adjacent to the frame, a nut threaded onto the outerend of the rod, a spring between the nut and the sleeve, and anadjustable support connected'to the sleeve.

7. A device of the. character specified,

comprising a ring, a screen or grating arnected to the frame at itscenter and rota-- ranged transversely of the rlng at one end, table onthe support, and a handle secured. a substantially semiclrcular springframe, a to the ring.

pivotal connection between each end of the FRED EUGENE BUCK. 5 springframe and the ring, said connections Witnesses:

being at diametrically opposite points on W. M. AROHIBALD,

the ring, a support for the frame, a rod con- R. B. ARCHIBALD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

